<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .container {
            width: 1200px;
            display: flex;
            height: 500px;
            margin: auto;
        }

        .content {
            flex: 1;
            background-color: #eee;
            overflow: hidden;
        }

        .content div {
            height: 500px;
        }
    </style>
</head>

<body>

    <div class="container">
        <ul>
            <li>
                <a href="#/first">first</a>
            </li>
            <li>
                <a href="#/second">second</a>
            </li>
            <li>
                <a href="#/third">third</a>
            </li>
        </ul>
        <div class="content">

        </div>
    </div>



    <script type="module" src="./index.js"></script>
    <script>

        // 创建了一个文件夹   component
        //   每一个渲染的功能都单独完成



    </script>



</body>

</html>